Split ui/display types into separate module and have Ozone depend on it

ui/display/chromeos/display_mode.cc

Index: ui/display/chromeos/display_mode.cc
diff --git a/ui/display/chromeos/display_mode.cc b/ui/display/chromeos/display_mode.cc
deleted file mode 100644
index f4f30642fd199ff0d938809dd8ec0b5410ecde1e..0000000000000000000000000000000000000000
--- a/ui/display/chromeos/display_mode.cc
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/display/chromeos/display_mode.h"
-
-#include "base/strings/stringprintf.h"
-
-namespace ui {
-
-DisplayMode::DisplayMode(const gfx::Size& size,
-                         bool interlaced,
-                         float refresh_rate)
-    : size_(size),
-      is_interlaced_(interlaced),
-      refresh_rate_(refresh_rate) {}
-
-DisplayMode::~DisplayMode() {}
-
-std::string DisplayMode::ToString() const {
-  return base::StringPrintf("[%dx%d %srate=%f]",
-                            size_.width(),
-                            size_.height(),
-                            is_interlaced_ ? "interlaced " : "",
-                            refresh_rate_);
-}
-
-}  // namespace ui